CN203979639U - A kind of steam turbine main inlet throttle-stop valve valve pocket - Google Patents
A kind of steam turbine main inlet throttle-stop valve valve pocket Download PDFInfo
- Publication number
- CN203979639U CN203979639U CN201420182333.6U CN201420182333U CN203979639U CN 203979639 U CN203979639 U CN 203979639U CN 201420182333 U CN201420182333 U CN 201420182333U CN 203979639 U CN203979639 U CN 203979639U
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- sleeve
- stop valve
- steam turbine
- valve
- main
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Abstract
The utility model discloses a kind of steam turbine main inlet throttle-stop valve valve pocket, comprising: stem sleeve, sealing block, upper gland sleeve, lower seal sleeve, main stop valve bar, packing lining, scale heaping groove; Described main stop valve bar is provided with stem sleeve, the interior forward end of described stem sleeve is equipped with sealing block and upper gland sleeve in turn, upper gland sleeve and packing lining compression fit, be processed with scale heaping groove at packing lining left end, and packing lining is connected tight gapless assembling with lower seal sleeve; The upper gland sleeve of described stem sleeve inside, lower seal sleeve, be Spielpassung with main stop valve bar; Described scale heaping groove is wedge shape.By implementing above technological scheme, there is following technique effect: the Steam Turbine's Main Vaper Valve valve pocket that the utility model provides, to avoid in main inlet throttle-stop valve emergency closure process, valve rod and valve pocket generation bite, cause unit hypervelocity stopping accident.
Description
Technical field
The utility model relates to steam turbine main frame valve technology field, particularly a kind of steam turbine main inlet throttle-stop valve valve pocket.
Background technique
Steam Turbine's Main Vaper Valve is one of important protective gear of steam turbine; break down (the closing not in place in movement test in bite, accidental shutdown) if main stop valve is in operation; not only cause steam turbine accident can not interrupting vapour source; and the serious accident that causes Steam Turbine Over-speed Accident driving, steam turbine main shaft to rupture, so the quality of main stop valve service behaviour directly affects the safe and stable operation of steam turbine power generation group.Only have the main stop valve of maintenance safety, reliable, flexible movements, just can avoid valve rod bite occurs, cause the generation of steam turbine hypervelocity accident.Transformation main stop valve cover falls scale with the matching gap of main stop valve bar, effective collection, stops, because high temperature scale enters valve pocket matching gap, to cause main stop valve bar bite, reduces unit failure incidence rate, reduces the generation of unit failure.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of steam turbine main inlet throttle-stop valve valve pocket of a kind of flexible movements, safety, stable operation is provided.
To achieve these goals, the utility model provides following technological scheme:
A kind of steam turbine main inlet throttle-stop valve valve pocket, comprising: stem sleeve, sealing block, upper gland sleeve, lower seal sleeve, main stop valve bar, packing lining, scale heaping groove; Described main stop valve bar is provided with stem sleeve, the interior forward end of described stem sleeve is equipped with sealing block and upper gland sleeve in turn, upper gland sleeve and packing lining compression fit, be processed with scale heaping groove at packing lining left end, and packing lining is connected tight gapless assembling with lower seal sleeve; The upper gland sleeve of described stem sleeve inside, lower seal sleeve, be Spielpassung with main stop valve bar; Described scale heaping groove is wedge shape.
By implementing above technological scheme, there is following technique effect: the Steam Turbine's Main Vaper Valve valve pocket that the utility model provides, to avoid in main inlet throttle-stop valve emergency closure process, valve rod and valve pocket generation bite, cause unit hypervelocity stopping accident.
Brief description of the drawings
Fig. 1 is structure principle chart of the present utility model.
Embodiment
In order better to understand the technical solution of the utility model, describe below in conjunction with accompanying drawing the embodiment that the utility model provides in detail.
The utility model embodiment provides a kind of steam turbine main inlet throttle-stop valve valve pocket, comprising: stem sleeve 101, sealing block 102, upper gland sleeve 103, lower seal sleeve 106, main stop valve bar 107, packing lining 105, scale heaping groove 104.
As shown in Figure 1, described main stop valve bar 107 is provided with stem sleeve 101, the interior forward end of described stem sleeve 101 is equipped with sealing block 102 and upper gland sleeve 103 in turn, upper gland sleeve 103 and packing lining compression fit, be processed with scale heaping groove 104 at packing lining 105 left ends, packing lining 105 is connected tight gapless assembling with lower seal sleeve 106; Upper gland sleeve 103, the lower seal sleeve 106 of described stem sleeve 101 inside, be Spielpassung with main stop valve bar 107; Described scale heaping groove 104 is wedge shape.
After installing, unit possesses standing test condition, opens main stop valve, in situ observation main stop valve action situation, and whether main inlet throttle-stop valve is opened into the process of full stroke position flexibly without bite from 0.Prominent closing under simulation main stop valve accident conditions, main stop valve quick closedown, by above-mentioned repeatedly (3-5 time) experimental observation; Or Turbo-generator Set is after long-time running, do the checking of main inlet throttle-stop valve movement test, if main stop valve valve rod without bite, activity freely, shows to transform successfully.
A kind of steam turbine main inlet throttle-stop valve valve pocket above the utility model embodiment being provided is described in detail, for one of ordinary skill in the art, according to the utility model embodiment's thought, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (3)
1. a steam turbine main inlet throttle-stop valve valve pocket, comprising: stem sleeve (101), sealing block (102), upper gland sleeve (103), lower seal sleeve (106), main stop valve bar (107), packing lining (105), scale heaping groove (104); It is characterized in that: described main stop valve bar (107) is provided with stem sleeve (101), the interior forward end of described stem sleeve (101) is equipped with sealing block (102) and upper gland sleeve (103) in turn, upper gland sleeve (103) and packing lining compression fit, be processed with scale heaping groove (104) at packing lining (105) left end, packing lining (105) is connected tight gapless assembling with lower seal sleeve (106).
2. a kind of steam turbine main inlet throttle-stop valve valve pocket according to claim 1, it is characterized in that: upper gland sleeve (103), lower seal sleeve (106) that described stem sleeve (101) is inner, be Spielpassung with main stop valve bar (107).
3. a kind of steam turbine main inlet throttle-stop valve valve pocket according to claim 1, is characterized in that: described scale heaping groove (104) is wedge shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420182333.6U CN203979639U (en) | 2014-04-08 | 2014-04-08 | A kind of steam turbine main inlet throttle-stop valve valve pocket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420182333.6U CN203979639U (en) | 2014-04-08 | 2014-04-08 | A kind of steam turbine main inlet throttle-stop valve valve pocket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203979639U true CN203979639U (en) | 2014-12-03 |
Family
ID=51977081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420182333.6U Expired - Fee Related CN203979639U (en) | 2014-04-08 | 2014-04-08 | A kind of steam turbine main inlet throttle-stop valve valve pocket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203979639U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716568A (en) * | 2018-08-15 | 2018-10-30 | 中国长江动力集团有限公司 | Regulating valve on valve rod sealing device and steam turbine |
-
2014
- 2014-04-08 CN CN201420182333.6U patent/CN203979639U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716568A (en) * | 2018-08-15 | 2018-10-30 | 中国长江动力集团有限公司 | Regulating valve on valve rod sealing device and steam turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20170408 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |